CN209198666U - Fast installation and recovery of high-coupling in-hole seismic wave receiving device - Google Patents

Abstract

The utility model discloses a kind of quick installations to recycle seismic receiving device in the hole of high coupling; including storage cylinder; storage cylinder air inlet/outlet end connects charge and discharge gas nozzle; storage cylinder protection rubber tube is provided on the outside of storage cylinder; the both ends of storage cylinder protection rubber tube are respectively fixed with top plug and connection plug, connection plug are connect with wave detector air bag expanded rubber cylinder one end；Seismic wave sensors built in expanded rubber cylinder, outside is correspondingly arranged conduct vibrations sheet metal, and seismic wave sensors and the sealing of conduct vibrations sheet metal are fixed on expanded rubber cylinder by fixed screw；The expanded rubber cylinder other end connects bottom end seal plug；Bottom end seal plug, expanded rubber cylinder and connection plug constitute closed wave detector air bag；It is connected between storage cylinder and wave detector air bag by gas-guide tube, air guide button hole, data transmission interface hole and device handle is arranged in top beyond the Great Wall, and seismic wave sensors are connected by data line with the data transmission interface in data transmission interface hole.

Description

Fast installation and recovery of high-coupling in-hole seismic wave receiving device

technical field

The utility model relates to a seismic wave receiving device in a hole, in particular to a receiving device for receiving seismic waves in a hole that needs to improve the coupling between a receiving sensor and a coal seam and a rock layer in seismic detection of roadways and tunnels to ensure the quality of reception.

Background technique

Seismic detection method is an important method for structural detection in coal mine working face, advanced detection of mine roadway and advanced detection of tunnel excavation. In order to ensure the quality of the received seismic data and improve the coupling between the geophone and the rock and coal walls, the receiving sensor is required to be in close contact with the coal and rock walls.

At present, the coupling methods of seismic detection geophones and coal walls in coal mine roadways and tunnels mainly adopt methods such as tail vertebra insertion method, rock wall pasting method, bolt conduction method, in-hole cementation method and on-site in-hole inflating method for seismic wave reception. These methods all have different defects and deficiencies.

The tail vertebra insertion method is to insert the tail vertebra of the traditional ground geophone into the coal wall. The length of the tail vertebra of the geophone is insufficient, and the insertion is difficult when the coal wall is hard. It is difficult to ensure the close coupling contact between the geophone and the coal wall.

The rock wall sticking method uses super glue to stick the geophone on the mine roadway or the rock wall of the tunnel. When the rock wall is not smooth and clean, this method has the disadvantage that the sticking is not firm and cannot effectively ensure close contact. At the same time, this method needs to wait for the sticking The construction period of glue consolidation is long, it is easy to cause damage to the geophone, it is difficult to recover the geophone, the construction cost is high, and soft rocks such as mudstone and coal seam cannot be constructed due to the influence of rock surface powder.

The anchor rod conduction method fixes the geophone on the anchor rod of the roadway wall or tunnel wall, and uses the anchor rod to transmit the seismic wave to the receiving sensor. Since the propagation mechanism and response characteristics of seismic waves in strata, rock mass, and coal seams are different from those in anchor bolts, the bolt conduction method has the disadvantage that it cannot directly receive seismic waves in coal seams or rock formations to be detected. The cementing quality of rods and coal seams and rock formations seriously affects the receiving quality of seismic waves.

The cementing method in the hole is to place the geophone in the receiving hole of the roadway wall or tunnel wall. In order to ensure the coupling, cement or superglue is used to consolidate the geophone in the receiving hole. This method also has the long construction period of waiting for the glue to solidify. , It is easy to cause damage to the geophone, it is difficult to recover the geophone, the construction cost is high, and soft rocks such as mudstone and coal seam cannot be constructed due to the influence of powder on the rock surface.

The on-site hole inflation method is also to place the geophone in the receiving hole, and use the method of inflating the airtight geophone to expand the outer rubber tube of the geophone to ensure that the sensor is in close contact with the wall of the receiving hole. When the air in the geophone is released, the outer expansion rubber tube of the geophone shrinks, and the geophone is taken out in the receiving hole. The on-site in-hole inflation method has the advantages of convenient recovery of sensors, hole wall couples and geophones. However, in the limited space of tunnels and roadways, the on-site inflation of each geophone has the disadvantages of long time and insufficient inflation space.

Utility model content

The purpose of this utility model is to overcome the deficiencies of the prior art above, to provide a fast installation and recovery without on-site inflation, and to ensure the coupling between the receiver and the hole wall. The coupling with the hole wall has the advantages of not needing to inflate on-site during construction, and the arrangement and recovery in the hole is convenient and fast. It solves the problems of poor coupling of the seismic wave receiving device in the current hole, insufficient on-site inflation space of the inflatable tool, difficulty in recovery, and long time for arrangement and recovery.

In order to achieve the above object, the utility model adopts the following technical solutions:

A fast installation and recovery high-coupling seismic wave receiving device in the hole, including a gas storage bottle, the gas storage bottle inlet and outlet ends are connected to the charging and discharging nozzle, the outer side of the gas storage bottle is provided with a gas storage bottle protection rubber tube, and the gas storage bottle One end of the protective rubber cylinder corresponding to the inlet and outlet ports is fixed with a top plug through the rubber cylinder sealing ring, the other end of the protective rubber cylinder of the gas storage cylinder is connected to one end of the connection plug through the rubber cylinder sealing ring, and the other end of the connection plug is passed through the rubber cylinder. The cylinder seal fixing ring is connected to one end of the expansion rubber cylinder of the geophone air bag; the expansion rubber cylinder has a built-in seismic wave sensor, and a vibration conduction metal sheet is arranged on the outside, and the seismic wave sensor in the expansion rubber cylinder and the vibration transmission outside the expansion rubber cylinder are connected by fixing screws. The metal sheet is sealed and fixed on the expansion rubber tube; the other end of the expansion rubber tube is connected to the bottom sealing plug through the rubber tube sealing ring; the bottom sealing plug, the expansion rubber tube and the connecting plug form a closed geophone air bag;

The gas storage bottle and the geophone air bag are connected through the air guide tube, and the top plug is provided with an air guide button hole, a data transmission interface hole and a device handle, and the seismic wave sensor is connected with the data transmission interface in the data transmission interface hole through the data transmission line; The trachea is provided with an air conduction button located in the air conduction button hole for inflating and deflating the air bag of the geophone.

The two fixed ends of the handle are respectively connected with hole plugs for sealing the data transmission interface and the hole of the air guide button through a thin steel wire rope.

The connecting plug is provided with a first air tube hole for the air tube to pass through and a first data transmission line hole for the data transmission line to pass through. The end of the air tube passes through the first air tube hole and extends into the geophone airbag. One end of the transmission line is connected to the seismic wave sensor through the first data transmission line hole.

The air guide tube and the data transmission line pass through a plurality of inner fixing rings and are fixed on the outer surface of the gas cylinder.

The inner fixing ring is provided with a second air guide tube hole for the air guide tube to pass through and a second data transmission line hole for the data transmission line to pass through, and the center of the inner fixing ring is an upper gas storage bottle hole that can be sleeved on the gas storage bottle.

The air guide tube and the data transmission line are between the protective rubber cylinder of the gas storage bottle and the gas storage bottle.

The inflation and deflation nozzle extends to the outside of the top plug.

The gas cylinder is in the shape of a long cylinder.

The end of the bottom sealing plug is a hemispherical structure.

The ratio of the gas storage volume of the gas storage bottle to the gas storage volume of the detector air bag is 4:1.

In the utility model, the filling and deflation nozzle is used to inflate the gas storage bottle before construction and discharge the high-pressure gas in the detector air bag and the gas storage bottle after construction; The airbag is inflated and deflated; the data transmission interface is set in the data transmission interface hole to connect the external data receiving equipment, and transmit the data received by the seismic wave sensor to the external data receiving equipment; the hole plug is used to protect the air guide button hole and the data transmission interface The holes are free from being soaked in water and blocked by coal powder, sludge and other foreign matter.

The handle of the device is used to carry the whole device; the protective rubber tube of the gas storage cylinder is set on the outer layer of the gas storage cylinder, and the air guide tube and data transmission line are wrapped inside to protect the gas storage cylinder from being squeezed, impacted and other damage; The air button is located on the air guide tube. When the air guide button is pressed down, the gas storage bottle communicates with the detector air bag; the inner fixing ring is used to fix the gas storage bottle, air guide tube and data transmission line in the protective rubber cylinder of the gas storage bottle.

The device uses a gas storage bottle to store high-pressure air in advance. After placing the receiving device in the receiving hole at the seismic detection site, press the air guide button to connect the gas storage bottle with the geophone air bag and inflate the geophone air bag. The outer expansion rubber tube of the geophone air bag expands under the action of high-pressure air pressure. When the air pressure in the airbag of the geophone reaches a certain level, the vibration-conducting metal sheet on the outside of the expanded rubber cylinder is in close contact with the inner wall of the receiving hole, thereby ensuring the coupling between the receiver and the wall of the receiving hole and improving the quality of seismic wave reception. When the seismic wave reception is completed, press the air guide button and open the inflation and deflation nozzle at the same time to discharge the high-pressure gas in the airbag of the geophone, the expansion rubber tube shrinks to the original size, and the device is pulled out from the receiving hole. The device has the advantages of not needing to inflate with an inflatable tool on site during construction, and the recovery of the arrangement in the hole is convenient and fast. The device can effectively solve the seismic waves such as the tail vertebra insertion method, the rock wall pasting method, the bolt conduction method, the hole cementing method and the on-site hole inflation method, which are commonly used in the seismic detection of coal mine roadways and tunnels. Poor coupling of the receiving device, insufficient inflatable space on site for inflatable tools, difficult recovery, and long time for layout and recovery.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the utility model embodiment;

Fig. 2 is the top plan view of the utility model embodiment;

Fig. 3 is a side view of the top plug assembly of the utility model embodiment;

Fig. 4 is a plan view of the inner fixing ring of the embodiment of the utility model;

Fig. 5 is a side view of the connection plug of the embodiment of the present invention;

Fig. 6 is a plan view of the connection plug of the embodiment of the present invention;

Fig. 7 is a side view of the bottom sealing plug of the utility model embodiment;

Fig. 8 is a plan view of the vibration conducting metal sheet of the embodiment of the utility model;

Fig. 9 is an on-the-spot seismic record diagram of the bolt conduction method;

Fig. 10 is the seismogram of the actual measurement of the hole inflation method;

Among them, 1. Top plug; 2. Gas storage cylinder; 3. Connection plug; 4. Seismic wave sensor; 5. Bottom sealing plug; 6. Internal fixing ring; 7. Gas storage cylinder protection rubber cylinder; 9. Data transmission line; 10. Rubber cylinder sealing and fixing ring; 11. Vibration conduction metal sheet; 12. Filling and deflation nozzle; 13. Data transmission interface; 14. Air button hole; 15. Handle; 16. Hole plug; 17. The first air duct hole; 18. The gas cylinder hole; 19. The first data transmission line hole; 20. The second air duct hole; 21. The second data transmission line hole; 22. Fixing screws;

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

The structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the limitations that the utility model can implement Conditions, so it has no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size should still fall within the scope of this utility model without affecting the effect and purpose of this utility model. The technical content disclosed by the new model must be within the scope covered. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable range of the utility model, and the change or adjustment of its relative relationship, without any substantial change in the technical content, shall also be regarded as the practicable scope of the utility model.

As shown in Figure 1-Figure 10, quickly install and recover high-coupling seismic wave receiving device in the hole, including gas storage cylinder 2, the gas storage cylinder 2 is connected to the charging and discharging nozzle 12 at the inlet and outlet ports, and the gas storage cylinder 2 is in the shape of a long cylinder structure, the inflation and deflation nozzle 12 extends to the outside of the top plug 1, and the gas storage bottle 2 can be inflated and deflated by the inflation and deflation nozzle 12. The outer side of the gas storage cylinder 2 is provided with a gas storage cylinder protection rubber cylinder 7, and one end of the gas storage cylinder protection rubber cylinder 7 corresponding to the air inlet and outlet ends of the gas storage cylinder 2 is fixed with a top plug 1 through the rubber cylinder sealing fixing ring 10, and the gas storage cylinder The other end of the protective rubber tube 7 is connected to one end of the connecting plug 3 through the rubber tube sealing and fixing ring 10, and the other end of the connecting plug 3 is connected to one end of the expansion rubber tube 23 of the geophone airbag through the rubber tube sealing and fixing ring 10; the expansion rubber tube 23 has a built-in seismic wave Sensor 4, the vibration conduction metal sheet 11 is arranged correspondingly on the outside, and the seismic wave sensor 4 in the expansion rubber cylinder 23 and the vibration conduction metal sheet 11 outside the expansion rubber cylinder 23 are sealed and fixed on the expansion rubber cylinder 23 by fixing screws 22; The other end of the tube 23 is connected to the bottom sealing plug 5 through the rubber tube sealing and fixing ring 10; the bottom sealing plug 5, the expansion rubber tube 23 and the connecting plug 3 form a sealed geophone airbag.

The gas storage bottle 2 and the geophone air bag are connected through the air guide tube 8, the top plug 1 is provided with an air guide button hole 14, a data transmission interface hole and a device handle 15, and the seismic wave sensor 4 is connected to the data transmission interface hole through the data transmission line 9. The data transmission interface 13 is connected; the air guide tube 8 is provided with an air guide button located in the air guide button hole 14 for inflating and deflating the detector airbag.

The connection plug 3 is provided with a first air guide tube hole 17 for the air guide tube 8 to pass through and a first data transmission line hole 19 for the data transmission line 9 to pass through; the end of the air guide tube 8 passes through the first air guide tube hole 17 and extends into In the device airbag, one end of the data transmission line 9 is connected to the seismic wave sensor 4 through the first data transmission hole 19, and the other end is connected to the data transmission interface 13 in the top plug 1, and the external device can be connected to the data transmission interface 13 to receive and store the data received by the sensor. Earthquake signal; the top plug 1 is also provided with an air guide button for controlling the on-off of the air guide tube 8, and pressing down the air guide button can release the high-pressure gas in the gas cylinder 2 into the geophone airbag through the air guide tube 8.

The air guide tube 8 and the data transmission line 9 are fixed by a plurality of inner fixing rings 6, the inner fixing rings 6 are set on the gas storage bottle 2, and are located inside the protective rubber cylinder 7 of the gas storage bottle, and the inner fixing ring 6 is provided with an air guide tube 8 The second air guide tube hole 20 passing through and the second data transmission line hole 21 for the data transmission line 9 to pass through. The center of the inner fixing ring 6 is the upper gas cylinder hole 18 which can be sleeved on the gas cylinder 2 .

The gas storage bottle protection rubber cylinder 7 is fixed on the gas storage cylinder 2, the top plug 1 and one end of the connection plug 3 through the rubber cylinder sealing and fixing ring 10 sleeved on its outside, so as to prevent the gas storage cylinder protection rubber cylinder 7 from being connected with the gas storage cylinder 2, One end of top plug 1 and connection plug 3 falls off. The geophone expansion rubber tube 23 is also fixed on the connection plug 3 and the bottom sealing plug 5 through the rubber tube sealing and fixing ring 10 sleeved on its outside, so as to prevent the geophone expansion rubber tube 23 from falling off and the geophone capsule from leaking.

The top plug 1 is provided with a handle 15, a data transmission interface 13 and an air guide button hole 14, and the handle 15 is due to moving, carrying, and carrying the whole device; The two fixed ends are respectively connected to the hole plugs 16 for sealing the data transmission interface 13 and the air guide button hole 14 by a thin steel wire rope. The hole plug 16 is used to protect the air guide button hole 14 and the data transmission interface 13, prevent the air guide button hole 14 and the data transmission interface 13 from being blocked by water or mud, and is used to protect and prevent when the entire device is not placed in the detection hole. The operation of pressing the air button by mistake.

The end of the bottom sealing plug 5 is a hemispherical structure. The ratio of the gas storage volume of the gas storage bottle to the gas storage volume of the detector air bag is 4:1.

Due to the characteristics of convenient construction and convenient and quick installation and recovery of geophones, the most commonly used geophone coupling methods for seismic detection in coal mine roadways are the bolt conduction method and the in-hole gas inflation method. Compared with the two, the coupling effect of the in-hole inflation method is much better than that of the bolt conduction method. The seismic wave of the bolt conduction method is transmitted from the coal seam to the geophone through two couplings, the coupling between the bolt and the coal seam and the coupling between the geophone and the bolt. will reduce the detection accuracy. Figure 9 shows the seismic records measured on site by the bolt conduction method, and Figure 10 shows the seismic records measured by the in-hole inflation method. In Figure 9, there is a coda phenomenon in the seismic waveform caused by poor coupling in the seismic records of the anchor conduction method. And due to poor coupling, the original seismic waveform produces a fixed-frequency envelope phenomenon.

According to the multi-degree-of-freedom vibration coupling theory, within the elastic limit of the coal seam, the greater the pushing force of the sensor to the coal wall, the more necessary, which requires the greater the air pressure in the geophone air bag, the better. However, considering the pressure bearing capacity of the gas storage cylinder and the rubber air bag, the sealing effect of the inflation, gas storage, and gas conduction links in the device, and the safety factors during the handling, loading and unloading of the gas storage cylinder in the gas storage state, the gas storage cylinder The air pressure cannot be infinite. According to the analysis of experiments and field tests, the geophone airbag is made of elastic rubber with a thickness of 5mm. When the air pressure in the geophone airbag reaches 3 standard atmospheric pressures, the geophone and the hole wall achieve a good coupling as shown in Figure 10.

In the case of constant temperature, according to the ideal gas equation:

formula,

P1 is the air pressure of the gas storage cylinder before the gas storage cylinder and the geophone air bag are connected;

P2 is the air pressure of the gas storage cylinder and the geophone air bag connected to the front geophone air bag;

P3 is the air pressure of the gas storage bottle and the geophone air bag after the gas storage bottle and the geophone air bag are connected;

V1 is the gas storage volume of the gas cylinder;

V2 is the gas storage volume of the geophone air bag;

Before the gas storage bottle and the geophone air bag are connected, in order to successfully place the device in the hole, the geophone air bag cannot be inflated, and the air pressure in it is 1 standard atmospheric pressure, that is, P2 is 1 standard atmospheric pressure. In order to ensure the coupling effect between the geophone and the hole wall, the air pressure between the gas storage bottle and the geophone airbag must reach 3 standard atmospheric pressures. Since the volume ratio of the gas storage bottle and the geophone air bag is 4:1, according to the ideal gas equation, it can be calculated that the gas storage pressure of the gas storage bottle and the geophone air bag together with the front is 3.5 atmospheres.

A detection method for quickly installing a seismic wave receiving device in a recovery hole without on-site inflation by using close contact with the hole wall, the steps are as follows:

1) Before entering the construction site, fill the gas storage bottle 2 with gas through the filling and deflation nozzle 12 under the condition that the gas guide button is activated, so that the air pressure in the gas storage bottle 2 increases to the point where the gas storage bottle and the detector After the air bag is connected, the expansion rubber cylinder can be in close contact with the wall of the receiving hole, and the air pressure value is 3.5 standard atmospheric pressure;

2) After arriving at the construction site, place the entire device in the detection hole, and rotate the entire device through the handle 15 to adjust the receiving position of the sensor;

3) Pull out the air guide button hole plug 16, press the air guide button down, so that the high-pressure gas in the gas storage bottle 2 enters the geophone airbag through the air guide tube 8, and the geophone expansion rubber cylinder 23 expands under the action of air pressure to make the vibration The conductive metal sheet 11 is in close contact with the inner wall of the geophone hole, so that the air guide button pops up, stops the air delivery of the air guide tube 8, and plugs the hole plug 16 back into the air guide button hole 14;

4) Pull out the hole plug 16 of the data transmission interface, connect the external seismic signal acquisition equipment, and collect seismic signals;

5) After the seismic signal acquisition is completed, unplug the external seismic signal acquisition equipment, and plug the plug back into the data transmission interface hole 13;

6) Pull out the hole plug of the air guide button, press the air guide button down, and open the filling and deflation nozzle 12 at the same time, let go of the air in the gas storage bottle 2 and the air bag of the geophone, and the expansion rubber tube 23 of the geophone shrinks back to the size before inflation , so that the air guide button pops up, and plug the hole plug back into the air guide button hole;

7) Hold the handle 15 and pull out the device from the detector hole.

Although the specific implementation of the utility model has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the utility model. Those skilled in the art should understand that on the basis of the technical solution of the utility model, those skilled in the art do not need to Various modifications or deformations that can be made with creative efforts are still within the protection scope of the present utility model.

Claims (10)

1. seismic receiving device in the hole of high coupling is recycled in quick installation, characterized in that including storage cylinder, storage cylinder disengaging Port end connects charge and discharge gas nozzle, and storage cylinder protection rubber tube is provided on the outside of storage cylinder, corresponding with storage cylinder air inlet/outlet end Storage cylinder protection rubber tube one end by rubber tube seal fixed ring be fixed with top plug, storage cylinder protect the rubber tube other end lead to It crosses rubber tube sealing fixed ring to connect with connection plug one end, the other end of connection plug seals fixed ring and wave detector by rubber tube Expanded rubber cylinder one end of air bag connects；Seismic wave sensors built in expanded rubber cylinder, outside are correspondingly arranged conduct vibrations metal Piece, and pass through fixed screw for the conduct vibrations sheet metal on the outside of the seismic wave sensors and expanded rubber cylinder in expanded rubber cylinder Sealing is fixed on expanded rubber cylinder；The other end of expanded rubber cylinder seals fixed ring by rubber tube and connects bottom end seal plug； Bottom end seal plug, expanded rubber cylinder and connection plug constitute closed wave detector air bag；

It is connected between storage cylinder and wave detector air bag by gas-guide tube, air guide button hole, data transmission interface hole is arranged in top beyond the Great Wall With device handle, seismic wave sensors are connected by data line with the data transmission interface in data transmission interface hole；It leads It is provided on tracheae in air guide button hole for the air guide button inflatable and deflatable to wave detector air bag.

2. seismic receiving device in the hole of high coupling is recycled in quick installation as described in claim 1, characterized in that described Connect the stopple for sealing data transmission interface and air guide button hole in two fixing ends of handle by seizing wire respectively.

3. seismic receiving device in the hole of high coupling is recycled in quick installation as described in claim 1, characterized in that described The the first air guide pore passed through for gas-guide tube and the first data transmission string holes passed through for data line are provided on connection plug, Air guide pipe end passes through the first air guide pore and extend into wave detector air bag, and data line one end passes through first data transmission line Hole is connected with seismic wave sensors.

4. seismic receiving device in the hole of high coupling is recycled in quick installation as described in claim 1, characterized in that described Gas-guide tube and data line pass through multiple interior fixed rings and are fixed on storage cylinder lateral surface.

5. seismic receiving device in the hole of high coupling is recycled in quick installation as claimed in claim 4, characterized in that described The the second air guide pore passed through for gas-guide tube and the second data line passed through for data line are provided in interior fixed ring Hole, interior fixed ring center are that can cover in the upper storage cylinder hole of storage cylinder.

6. seismic receiving device in the hole of high coupling is recycled in quick installation as described in claim 1, characterized in that described Gas-guide tube and data line are between storage cylinder protection rubber tube and storage cylinder.

7. seismic receiving device in the hole of high coupling is recycled in quick installation as described in claim 1, characterized in that described Charge and discharge gas nozzle extends to top portion beyond the Great Wall.

8. seismic receiving device in the hole of high coupling is recycled in quick installation as described in claim 1, characterized in that described Storage cylinder is in long tubular structure.

9. seismic receiving device in the hole of high coupling is recycled in quick installation as described in claim 1, characterized in that described The end of bottom end seal plug is hemispherical dome structure.

10. seismic receiving device in the hole of high coupling is recycled in quick installation as described in claim 1, characterized in that storage Gas cylinder gas storage volume and wave detector air bag gas storage volume ratio are 4:1.